The cuprinol ultra tough wood filler in natural delivers professional-grade repair capability for demanding interior and exterior woodworking applications. This solvent-based 500g formula restores damaged timber through chemical hardening, ensuring long-lasting repairs across knot holes, screw holes, and nail holes. Engineered to address wet rot damage and major joinery restoration, this filler provides weather-resistant performance without shrinking, splitting or cracking. The fast-setting composition remains workable for up to 10 minutes and achieves full cure within 30 minutes. Once dry, the hardened filler accepts sanding, drilling, screwing and nailing operations, preparing surfaces for varnishing, painting or staining applications. Superior adhesion to sound wood ensures reliable bonding in both workshop and outdoor maintenance environments. Features & benefits: suitable for interior and exterior wood repair, restoration and joinery applications requiring durable timber restoration. Non-shrinking formula resists splitting and cracking for long-lasting, weather-resistant performance. Fast-setting chemical hardening cures within 30 minutes with up to 10 minutes working time. Can be sanded, drilled, screwed and nailed when dry for multiple finishing options. Prepares surfaces for varnishing, painting or staining applications. Repairs wet rot damage, knot holes, screw holes and nail holes effectively. Solvent-based composition with superior adhesion to sound wood. Size:...